4. Infectious diseases are caused by microscopic living things called High blood pressure O inherited disease
O pathogens
O genes

Pathogens
a pathogen is anything that can cause a disease in a cell. NOT genes. genes are the biological code that makes up a person. genes don’t produce diseases

People who utilizes the progression principle will ensure their exercise program increases in frequency, intensity, time, and type. the changes need to happen gradually in order to ensure they make gains in their fitness program. a person who doesn't utilize the progression principle can still gain health benefits from exercising, but will not continue to improve in cardiovascular fitness.